index_size = defaults->get("INDEX_SIZE", index_size);
index_count = defaults->get("INDEX_COUNT", index_count);
use_thumbnails = defaults->get("USE_THUMBNAILS", use_thumbnails);
index_size = defaults->get("INDEX_SIZE", index_size);
index_count = defaults->get("INDEX_COUNT", index_count);
use_thumbnails = defaults->get("USE_THUMBNAILS", use_thumbnails);